標題: Great enhancements in the thermoelectric power factor of BiSbTe nanostructured films with well-ordered interfaces
作者: Chang, Hsiu-Cheng
Chen, Chun-Hua
Kuo, Yung-Kang
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 2013
摘要: An innovative concept of twin-enhanced thermoelectricity was proposed to fundamentally resolve the high electrical resistance while not degrading the phonon scattering of the thermoelectric nanoassemblies. Under this frame, a variety of highly oriented and twinned bismuth antimony telluride (BixSb2-xTe3) nanocrystals were successfully fabricated by a large-area pulsed-laser deposition (PLD) technique on insulated silicon substrates at various deposition temperatures. The significant presence of the nonbasal- and basal-plane twins across the hexagonal BiSbTe nanocrystals, which were experimentally and systematically observed for the first time, evidently contributes to the unusually high electrical conductivity of similar to 2700 S cm(-1) and the power factor of similar to 25 mu W cm(-1) K-2 as well as the relatively low thermal conductivity of similar to 1.1 W m(-1) K-1 found in these nanostructured films.
URI: http://hdl.handle.net/11536/22439
http://dx.doi.org/10.1039/c3nr01499a
ISSN: 2040-3364
DOI: 10.1039/c3nr01499a
期刊: NANOSCALE
Volume: 5
Issue: 15
起始頁: 7017
結束頁: 7025
顯示於類別:期刊論文


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